The Courtship of Animals

by W. P. Pycraft

Plate 33.

CRICKETS AND MAY FLIES.

1 and 2 afford illustrations of the excessive development of “ornament “; fig. 3 of devices for seizing the female; figs. 4 and 5 of unaccountable differences in the development of wings.

1. The Pneumatic Cricket (Pneumora scutellaris), showing the strange markings on the female.

2. The Cleft-footed Burrowing Cricket (Schizodactylus monstrosus).

3. The Giant Alder-fly (Corydalis crassicornis), with its huge jaws for grasping the female.

4. The Stone-fly (Perla maxima), the large-winged Continental form.

5. Loch Tanna Stone-fly (Isogenus nubecula), male, with vistigial wings.

[Face page 220.